The present disclosure relates to a positive electrode slurry for a lithium-sulfur battery including a positive electrode active material, an electrically conductive material, a binder and a solvent, where the ratio of the average particle diameter (D.sub.50) of the positive electrode active material and the positive electrode slurry is 1.5 or less, and the phase angle at 1 Hz of the positive electrode slurry is 50° or more. The positive electrode slurry for the lithium-sulfur battery of the present disclosure exhibits excellent flowability even while having a high solid content, thereby making it possible to manufacture a positive electrode for a lithium-sulfur battery with excellent electrochemical properties and improving the productivity and economic feasibility of the manufacturing process of the positive electrode for the lithium-sulfur battery.

A silicon-polymer composite anode having two or more different molecular weight (MW) versions of the same polymer, method of making the anode and electrochemical energy storage device containing the anode are disclosed.

A cathode material of a lithium-ion battery and a fabricating method thereof, and a lithium-ion battery are described. The cathode material of the lithium-ion battery has hexaazatriphenylene embedded quinone (HATAQ) and/or its derivative small molecules, which have multiple redox-active sites and can form intermolecular hydrogen bonds to form a graphite-like layered structure. When HATAQ and/or its derivative small molecules are used as a cathode material, a stable structure can be maintained during a charge and discharge process and during lithium ions entering and exiting.

A cathode material of a lithium-ion battery and a fabricating method thereof, and a lithium-ion battery are described. The cathode material of the lithium-ion battery has hexaazatriphenylene embedded quinone (HATAQ) and/or its derivative small molecules, which have multiple redox-active sites and can form intermolecular hydrogen bonds to form a graphite-like layered structure. When HATAQ and/or its derivative small molecules are used as a cathode material, a stable structure can be maintained during a charge and discharge process and during lithium ions entering and exiting.

An apparatus for manufacturing a lithium-ion secondary cell negative-electrode carbon material by heat-treating carbon particles while causing the carbon particles to flow within a heat-treatment furnace, the apparatus having a heat-treatment furnace provided with a carbon-particle supply opening for supplying the carbon particles into the interior, and a negative-electrode carbon material recovery opening for taking out the negative-electrode carbon material from the interior and a cooling tank connected in an airtight manner to the negative-electrode carbon material recovery opening of the heat-treatment furnace, and provided with a cooling means.

The present invention provides an aqueous electrolyte for use in rechargeable zinc-halide storage batteries that possesses improved stability and durability and improves zinc-halide battery performance. One aspect of the present invention provides an electrolyte for use in a secondary zinc bromine electrochemical cell comprising from about 30 wt % to about 40 wt % of ZnBr.sub.2 by weight of the electrolyte; from about 5 wt % to about 15 wt % of KBr; from about 5 wt % to about 15 wt % of KCl; and one or more quaternary ammonium agents, wherein the electrolyte comprises from about 0.5 wt % to about 10 wt % of the one or more quaternary ammonium agents.

The present invention provides an aqueous electrolyte for use in rechargeable zinc-halide storage batteries that possesses improved stability and durability and improves zinc-halide battery performance. One aspect of the present invention provides an electrolyte for use in a secondary zinc bromine electrochemical cell comprising from about 30 wt % to about 40 wt % of ZnBr.sub.2 by weight of the electrolyte; from about 5 wt % to about 15 wt % of KBr; from about 5 wt % to about 15 wt % of KCl; and one or more quaternary ammonium agents, wherein the electrolyte comprises from about 0.5 wt % to about 10 wt % of the one or more quaternary ammonium agents.

Disclosed is an electrode. An electrode according to the present invention includes an active material layer; and a current collector which includes a plurality of conductive filaments, wherein at least one from among the plurality of conductive filaments is embedded in the active material layer so that a set length is exposed from the surface thereof.

A composition includes a silicon nanoparticle having surface-attached groups, and the silicon nanoparticle is represented by the formula:
[Si]-[linker]-[terminal group].
In the formula [Si] represents the surface of the silicon nanoparticle; [terminal group] is a moiety that is configured for further reaction or is compatible with the electrolyte; and [linker] is a group linking the surface of the silicon nanoparticle to the [terminal group].

A method for the preparation of an electrode comprising a substrate made of an aluminium based material, vertically aligned carbon nanotubes and an electrically conductive polymer matrix, the method comprising the following successive steps: (a) synthesising, on a substrate made of an aluminium based material, a carpet of vertically aligned carbon nanotubes according to the technique of CVD (Chemical Vapour Deposition) at a temperature less than or equal to 650° C.; (b) electrochemically depositing the polymer matrix on the carbon nanotubes from an electrolyte solution including at least one precursor monomer of the matrix, at least one ionic liquid and at least one protic or aprotic solvent. Further disclosed is the prepared electrode and a device for storing and returning electricity such as a supercapacitor comprising the electrode.